Apparatus for sampling liquids.



APPARATUS FOR'SAMPLING LIQUIDS.

APPLlCATIoN FMD JULY :3, 1914.

n.1. mma/ams. PPARATS FOR SAMFLING QUIDS.

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RCBERT LAURENCE CHAMBERS, QF ELMORE, BROXBURN, SCOTLAND.

APPARATUS FOR SAMPLING LIQUIDS.

agradece.

Specification of Letters Patent.

Patenten .nay is, 1915!.

Application filed July 13, 19,14. Serial No. 850,783.

To (IKZ @from itmag/ concern Y Be known thatl, ROBERT LAURENCE ananas, a subject of the King of Great :Britain and ireland, residing at Elmore, Brorghurn, .liinlithgowsliire Scotland, have invented new and useful Improvements in crf'Conneoted with Apparatus for Sampling Liquids, ot which the following is a specitication.-

if his invention relates to improvements in or'connected with apparatus for use in taking samples from liquid periodically, especially from flowing liquid running to waste or'in its course to be delivered for supply or storage, and inwhich the' samples are received leach in a separate receptacle of a' series thereof. For this purpose apparaf` tus has been devised having a series ot' receptacle-s 'tor receiving the samples as they taken, the distribution to the respectiv receptacles being eil'ected by the aid of mechanism which in most cases has .de-

pended upon clockwork actuation or controt.

`According to this invention the motive power required for the operation of the apigiaratus and the control required for regir iating the intervals ot time at which successive samples are to he taken are derived Y from liquid taken from the source to he.

sampled.

-inexample ot apparatus embodying-features according to this inventionk'ill now he described with reference to the accom- .,aanving drawings, in which:-

parts in elevation. some in vertical section nd some in dotted lines, Fig. 2 is a plan, d l? 3 is a sectional elevation at right ingles tu Fig. l, looking from the lett toward the" right.

.in practice, according to this invention, aportion only ot the liquid from thesource to be sampled is preferably made use of for giving; the required motive power and control.4 and in order that these shall be regular, a ronstant head is desirable, which may be obtained by permitting a portion of the liquid to flow into a tank A having an over- ;tlow B adapted to cope with the delivery. ltivill. however, he recognized that, it desired, thewhole of the liquid might loe permitted topass into the tank. ln the appa- "ratus shown,

liquid delivered tothe taule A enters by a supply pipe B1, which presents its mouth to anmaperture in a lid C of a casing C within which the mechanism is contained, the lid Cf being hinged at C2, see Fig. 3. No hinge is shown in the drawings. A strainer D may, as shown, be iitted over the aperture in the lid for intercepting foreign matter. From near the base ot' the tank `A liquid is taken by a pipe E, its rate of flow. if required, being regulated by avalve El, and delivered into a device, which, when charged to a predetermined extent, discharges its contents and in doing so eX- erts a force which is applied to perform, or store energy, for the purposes of the operations required, delivers a sample of its contents to a receptacle, which may conveniently consist of a bottle and will hereinafter he'referred to as such, and discharges the surplus of the charge. A straining screen, Afl, shown in Fig. 2, maybe fitted in the tank in front of the supply pipe, E.

ln one form of construction as exemplified in the drawings, the device consists of a tilting trough F (mounted on trunnions F1), arranged to be 'normally held in a charging' position by means of a balance weight F2, which after discharge operates to return the trough F to its normal position and exert energy' for the required operations. Thebalance weight F2 may be arranged so as to be capable of adjustment relativeto'the trunnions. For this purpose, in the construction illustrated, the weight F2 is mounted upon a screwed rod F3 projecting from the inner end of the trough. For receiving a number of samples a .stand rotarv table G having. recesses consists' of a G1 for a series of bottles G2, to stand in, and

in step-by-step rotation each to lloe successively brought into position to receive its respective sample. For delivering each sample to its respective bottle, the trough F is provided at a position toward its outer or downwardly tiltable end, above the level the liquid reaches at which the weight 1s overbalanced, 4with a duct -H which, when the trough F tilts, comes over the mouth of the bottle, the outer end of thel trough be yond the duct being open and extended to overlap a gutter K when in its .tilted p osition, so that when the charge'of liquid flows down the.trough,.,l, a portion passes through the duct Hite-fthe bottle and the rest into the gutterl from whence it passes through a drain l@ formed in the base'lof a pan K2, to run to waste or be conducted to 10m the liquid in itsow beyond the apparatus. The quantity of liquid passing out through the duct H may be regulated by providing a lip to intercept the flow. This lip may consist of a portion of a tube H1 capable of being turned about the axis of the duct H, and cut away on one side to present, say, a semicircular lip in plan, which by adjustment may intercept any quantity Within the limits required.

A step-by-step rotation of the table G may be obtained by mechanism operated by the rocking movements of the trough F; for instance, as shown in the example of construction illustrated, a shaft forming the trunnions F:l for the trough to turn about may be provided with a depending arm L having a pawl L1 pivoted at its lower end adapted to engage with steps M on the surface of the table G, and the back end' of the trough F may be provided with a depending detent N adapted to enter between the steps M and prevent rotation when the trough approaches or is in its normal position. The force required for the rotation of the table Gr may be derived from the Weight F2 in the reactionary movement which it makes to return the trough after discharge.

As shownat Fig. 2, a stop P adapted to engage with an abutment- P1 is preferably provided for preventing the table G from making more than one rotation, and the table is provided with an orifice Gr1 corresponding to the position which, at the completion of rotation of the table, would be otherwise occupied by a bottle. arranged in conjunction with the drain K1 so that continued discharge through the duct, after the table has been stopped. would. run to waste. In the construction slown, the discharge from the duct H through the orifice G* would-run to'ivvaste by passing into the pan KJ and escape therefrom by the drain K1. To facilitate the removal and replacement of the bottles (W. a bolt R may be provided to retain the trough F in its tilted position, and so withhold the detent N from engagement with the steps M, to permit the table to be rotated freely forward. Discharge openings which are required in the casing C may be covered, for example. with Wire network.

It Will be recognized that the intervals of time at which the tilting occurs can be regulated by the valve El of the delivery from the tank A.

The apparatus is applicable for usegenerally, but is particularly adapted for taking samples from etiiuents, such. for ekample, as the spent Water from ammonia plant. which ma y contain valuable mattei".

I claim 2'- l. An apparatus havingr a support .for a .series of receptacles, means for taking from a source of liquid samples in si cccssiou and delivering them each to a. separate receptacle of the series, and meansfor operating the apparatus and regulating thel intervals of time at which the samples in succession are taken operated by motive power derived from the liquid taken from the source to be sampled and controlled by liquid derived from the said source.

2. Anapparatus having a support for a series of receptacles', means for takingv from a source of liquid samples in succession and delivering them each to aseparate receptacle of the series, and means for 'operating the apparatus and regulating the intervals-of time at which the samples in succession are taken operated by mot-ive power derived from the liquid taken from the source to be sampled and controlled. by liquid derived from the said source, and means for mainlainng the liquid to be so used at a constantl 3. An apparatus having asupport for a series of receptacles, a tank into which liquid from a source to be sampled is permitted to i'low, an overflow adapted to cope with the delivery of liquid to the tank,'an outlet from the tank, and means operated by liquid which flows from the outlet arranged to deliver samples in successiomeach to a separate receptacleof the series.

4. An apparatus having a support for a series of receptacles, a tank into which liquid from a source to be sampled is permitted to flow, an overflow adapted to cope withthe delivery of'liquid to the tank, a-n outlet having means for controlling the rate of flow of liquid from the tank, andA means operated b v liquid which iows from the outlet arranged to deliver samples in succession each to a separate receptacle of the series.

5. An apparatus having a support for a series of receptacles, means for taking liquid from a source to be sampled, a device to receive liquid so taken constructed and arranged to discl'iarge its contents when charged to a predetermined extent and exert a force, and means-for applying the force.

to operate the apparatus, deliver a sample' of its contents to one of the receptacles, and successively bring each of the receptacles into position.

6. An apparatus having a support for a, series of receptacles. means for taking liquid from a. sourceto be sampled, a tilting trough arranged to be normallyr held in a charging position to receive liquid so taken and tilt when charged to a predetermined extent. a duct in the trough at a position toward its outer end above the level the liquid reaches at which the device tilts, thty outer end of the trough beyondthe duct being open. and means operated by the movements of the trough for bringing the receptacles ot' the series cach in succession beneath the duct.

nieefioe -\lthemovements of the trough for bringing the reeeptacles of the series each in succes.-

sion beneath the duct.

8. n apparatus having a. support for a series of receptacles, means for taking liquid from a. source to be sampled, a tilting trough arranged to be normally held' in a 'charging position to receive liquid so taken and tilt when charged to a. predetermined extent, a duct in the trough at a position tovvard its outer end above the level the liquid reaches at which the device tilts, the

ductjhaving a lip capable of being turned about the axis of theA duct for regulating the quantity of liquid intercepted, the outer .i end of thetrough beyond the duct being open, and means operated by the movements of the'trough for bringing the receptacles of the ,series each in succession beneath the duct. f

9. An apparatus having a tilting trough, 'means for delivering liquid taken from a source to be sampled .tothe trough, a rota` .ta-ble-stand for the support of a series of receptacles, means for imparting a step-bystep rotation to the stand operated by the tilting movenientsof the trough, the trough having a duct arranged when the trough is tilted to deliver a' sample to a. receptacle, for the purposes set forth.

10. An apparatus having a tank into which liquid from a source to be sampled is permitted to lovv, an overflow adapted to 11. An apparatus having a stand for the support of a series of recepnacles,meaits for advancing the vstand step-by-step to bring each receptacle in`- succession into a 'charging position operated by power derived from liquid taken from the source to oe sampled, and means for charging the receptacles successively operated and controlled by liquid taken from the source to be sampled.

12. An apparatus having a rotatable stand for the support of a series of .receptacles. means for imparting a step-.bvstep rotation to the sta-nd to bring eachl receptacle insuccessiouin a charging osition operated by power derived from liquid taken from the source to be sampled, and vmeans for charging the receptacles successively operated and controlled by' liquid taken from the source to be sampled.

13. An apparatus having rotatable stand for the support of a series of lreceptacles, a tilting trough, a duct at the outer end of the trough, a balance Weight arranged to hold the trough normally in a. charging position, means operated by the tilting trough for imparting a step-by-step rota tion to the stand to bring in succession each of the receptacles beneath the duct 'when the trough is tilted, and means for permitting liquid from a source to be sampled to flow into the trough at the rate required.

ROBERT LAURENCE CHAMBERS.

Witnesses:

J. ALFRED BREWER, DORA E. BAILLIE. 

